Skip to main content
Fig. 4 | European Radiology Experimental

Fig. 4

From: Emphysema quantification using chest CT: influence of radiation dose reduction and reconstruction technique

Fig. 4

Effect of different thresholds (a) and percentiles (b) on emphysema quantification. For FBP at reduced dose a lower threshold is more appropriate, while with HIR and MIR a higher HU threshold should be used. With the percentile quantification method, FBP at reduced dose requires a higher percentile while with HIR and MIR a lower percentile should be used to achieve the same results as with FBP at routine dose. FBP filtered back projection, HIR hybrid iterative reconstruction, MIR model-based iterative reconstruction

Back to article page